blob: fd47b0854bb26c9b24af4a13bf76efa5b93d44ff [file] [log] [blame]
Wei Mi24662392016-09-14 04:39:50 +00001; PR30213. Check scev expand will generate correct code if the value
2; in ValueOffsetPair is of pointer type.
3; RUN: opt -mtriple=i386-apple-macosx10.12.0 < %s -loop-reduce -S | FileCheck %s
4
5; CHECK: %ptr4.ptr1 = select i1 %cmp.i, i8* %ptr4, i8* %ptr1
6; CHECK-NEXT: %scevgep = getelementptr i8, i8* %ptr4.ptr1, i32 1
7; CHECK-NEXT: br label %while.cond.i
8
9target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
10target triple = "i386-apple-macosx10.12.0"
11
12; Function Attrs: nounwind optsize ssp
13define void @Foo() {
14entry:
15 switch i2 undef, label %sw.epilog102 [
16 i2 -2, label %sw.bb28
17 ]
18
19sw.bb28: ; preds = %entry
20 %0 = load i8*, i8** undef, align 2
21 %ptr1 = getelementptr inbounds i8, i8* undef, i32 -1
22 %ptr4 = getelementptr inbounds i8, i8* %0, i32 -1
23 %cmp.i = icmp ult i8* undef, %0
24 %ptr4.ptr1 = select i1 %cmp.i, i8* %ptr4, i8* %ptr1
25 br label %while.cond.i
26
27while.cond.i: ; preds = %while.cond.i, %sw.bb28
28 %currPtr.1.i = phi i8* [ %incdec.ptr.i, %while.cond.i ], [ %ptr4.ptr1, %sw.bb28 ]
29 %incdec.ptr.i = getelementptr inbounds i8, i8* %currPtr.1.i, i32 1
30 %1 = load i8, i8* %incdec.ptr.i, align 1
31 br label %while.cond.i
32
33sw.epilog102: ; preds = %entry
34 unreachable
35}
36